/**
 * Renders a scene with a camera
 * @param graphics GameLib.D3.Graphics
 * @param apiRenderer GameLib.D3.API.Renderer
 * @constructor
 */
GameLib.D3.Renderer = function (
    graphics,
    apiRenderer
) {

    this.graphics = graphics;
    this.graphics.isNotThreeThrow();

    GameLib.D3.API.Renderer.call(
        this,
        apiRenderer.id,
        apiRenderer.name,
        apiRenderer.rendererType,
        apiRenderer.scene,
        apiRenderer.camera,
        apiRenderer.autoClear,
        apiRenderer.localClipping,
        apiRenderer.width,
        apiRenderer.height,
        apiRenderer.parentEntity,
        apiRenderer.preserveDrawingBuffer
    );

    if (this.camera instanceof Object) {
        if (this.camera.cameraType == GameLib.Component.COMPONENT_CAMERA) {
            this.camera = new GameLib.D3.Camera(
                this.graphics,
                this.camera
            );
        } else if (this.camera.cameraType == GameLib.Component.COMPONENT_STEREO_CAMERA) {
            this.camera = new GameLib.D3.StereoCamera(
                this.graphics,
                this.camera
            );
        } else {
            console.warn('Camera type not supported : ' + this.camera.cameraType);
            throw new Error('Camera type not supported : ' + this.camera.cameraType)
        }
    }

    this.instance = this.createInstance();
};

GameLib.D3.Renderer.prototype = Object.create(GameLib.D3.API.Renderer.prototype);
GameLib.D3.Renderer.prototype.constructor = GameLib.D3.Renderer;

GameLib.D3.Renderer.prototype.createInstance = function(update) {

    var instance = null;

    if (update) {
        instance = this.instance;
    } else {
        instance = new THREE.WebGLRenderer();
    }

    instance.localClippingEnabled = this.localClipping;
    instance.setSize(this.width, this.height);
    instance.autoClear = this.autoClear;
    instance.preserveDrawingBuffer = this.preserveDrawingBuffer;

    if (this.camera) {
        this.camera.aspect = this.width / this.height;
        this.camera.updateInstance();
    }

    return instance;
};

GameLib.D3.Renderer.prototype.updateInstance = function() {
    this.instance = this.createInstance(true);
};

GameLib.D3.Renderer.prototype.toApiComponent = function() {

    var apiRenderer = new GameLib.D3.API.Renderer(
        this.id,
        this.name,
        this.rendererType,
        GameLib.Utils.IdOrNull(this.scene),
        GameLib.Utils.IdOrNull(this.camera),
        this.autoClear,
        this.localClipping,
        this.width,
        this.height,
        GameLib.Utils.IdOrNull(this.parentEntity),
        this.preserveDrawingBuffer
    );

    return apiRenderer;
};

/**
 *
 * @param graphics
 * @param objectComponent
 * @returns {GameLib.D3.Renderer}
 * @constructor
 */
GameLib.D3.Renderer.FromObjectComponent = function(graphics, objectComponent) {

    var apiRenderer = GameLib.D3.API.Renderer.FromObjectComponent(objectComponent);

    return new GameLib.D3.Renderer(
        graphics,
        this,
        apiRenderer
    );
};

/**
 *
 */
GameLib.D3.Renderer.prototype.render = function() {
    this.instance.render(
        this.scene.instance,
        this.camera.instance
    );
};